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Finding the Fourth Proportional to 364.58, 546.94 and 145.20

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Solution

The fourth proportional to 364.58, 546.94 and 145.20 is: 217.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.58 : 546.94 = 145.20 : x
  2. Step 2: Convert to fraction form
    364.58/546.94 = 145.20/x
  3. Step 3: Cross multiply
    364.58x = 546.94 × 145.20
  4. Step 4: Simplify right side
    364.58x = 79,415.69
  5. Step 5: Solve for x
    x = 79,415.69/364.58
  6. Step 6: Final answer
    x = 217.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.